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Finding the Fourth Proportional to 275,164.56, 379,731.15 and 160,440.12

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Solution

The fourth proportional to 275,164.56, 379,731.15 and 160,440.12 is: 221,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,164.56 : 379,731.15 = 160,440.12 : x
  2. Step 2: Convert to fraction form
    275,164.56/379,731.15 = 160,440.12/x
  3. Step 3: Cross multiply
    275,164.56x = 379,731.15 × 160,440.12
  4. Step 4: Simplify right side
    275,164.56x = 60,924,111,273.74
  5. Step 5: Solve for x
    x = 60,924,111,273.74/275,164.56
  6. Step 6: Final answer
    x = 221,409.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.